86 and 87 utilize the Pythagorean theorem. Where those tangent lines meet the circle forms a right angle. So you have a side length of 6 and a hypotenuse of 22. So the missing side length is 21.16. For 87, its the same thing, but you have the 2 legs but are missing the hypotenuse.
Answer:
4/13
Step-by-step explanation:
"given that they have a cat?" means you are referring to only the students that have cats(that is the number on the bottom)
i am very bad at explaining math lol
Answer:
392in
Step-by-step explanation:
find the areas of all the sides of this shape. Of one you might have to split it into two shpaes.
Answer:
Lets take the hypothesis
<em>zα/2 </em>
<em>- zα/2 </em>
Step-by-step explanation:
<em>α/2 = 0.10/2 = 0.05
</em>
<em>z(0.05) = 3.92
</em>
<em>-z(0.05) = -3.92
</em>
